Internal-combustion engine.



G. DOLBMBO & G. H. LAMBERT.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAR. 19, 1914.

' Patented Jan. 5, 1915.

T v R m in /W m 0 M w E B Am w z m m n E m m .1 E H F E n m w m a E E Ma 6 WM sea.

GEORGE EDOLEMBO AND GEORGE E. LAMBERT, F MADISON, WISCONSIN.

messes.

To all whom it may concern Be it known that we, GEORGE DoLnMBo andGnonen HENRY LAMBERT, citizens of the United States, residing atMadison, in

the county of Dane and State ofWisconsin,

have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

Our invention relates to internal combustion engines, but moreparticularly to the means for admitting, firing, and discharging of theexplosive mixtures, in a manner that will preclude the depositing ofcarbon 5 in localities which are dangerous to the operation of enginesof that class.

We attain these objects by the mechanism illustrated in the accompanyingdrawings in which 2 Figure 1,-is a side elevation partly in section,Fig. 2, is a front elevation, assuming that the engine is of thevertical type.

Similar numerals refer to similar parts throughout the several views.

1, is a crank case of usual type with two side plates carrying centralintegral bearings, in which the main shaft is revolubly disposed. Thetop of said case forms a circular flange or socket into which the lowerend of the cylinder, 2, is secured by screw threads or otherwise. On thetop and outside of the said cylinder is disposed the valve chest 3,comprising a central socket adapted to surround and cover the cylinder,

a passage extending in opposite directions from the center of thecylinder and terminating in the side walls, into which the spark plugs7, are disposed. -A distance sage is divided by a wall forming a secondpassage or valve chamber.

At the extreme outer ends of the central wall and top plate of thesecond passage are two circular apertures in both plates, and into whichare secured the intake valve cages 5.

On the rear side of the upper chamber, interjacent the valve cages isthe intake pipe 4, which leads to and connects with the carbureter.

Adjacent the socket and under the exhaust valves 8, extending oppositelyfrom the cylinder are the exhaust ports or pipes 34, forming oneintegral casting with the aforesaid chambers and intake pipe 4.

The valve cage 5, comprises a circular top Specification of LettersPatent.

above the top of the cylinder the said pas- INTERNAL-COMBUSTION ENGINE.

Patented Jan. 5, 1915.

Application filed March 19, 1914. Serial No. 825,881.

plate extending a distance beyond the threaded portion on the top of thevalve chest, a gasket being placed between the two, a central hub andfour posts extending downward to the valve seat, the arm 33, disposed ontop and extending upward and outward from the edge of said cage, theWhole to be one casting.

Within a slot in the top of the arm 33,

is pivotally disposed lever 13, and secured to the same by the pin 25,the lever extending inward to the valve stem 6, through which a pin isdisposed. Between the said lever and the top of the cage surroundingnected to rod 14, by pin 26, the said rod ex- ,75

tending downward to and passing through guide 36, to a cam 23, on camshaft 24, the said cam 23, being timed to the requirements of theengine.

On the side of the crank case is disposed go a cam shaft or gear case17. On the top of said case is disposed guides 35 and 36. Within thesaid case isdisposed a cam shaft 24, journaled in each end of the case.Intermediate the ends of said shaft is disposed a s5 spiral gear 15. andon each side of said gear is mounted two cams 23, adapted to engage andoperate the four cam rods 11 and 14, connected to the double set ofintake valves 6, and exhaust valves 8, of the engine.

The exhaust valves 8, are disposed in vertical 'alinement under theintake valves 6, and seated in the lower wall of the valve chest 3, andretained in proper position by the sleeves 31. Under and abutting-saidsleeves are the collars 37, contiguous said collars 37, and surroundingthe stem of valve 8, are mounted the springs 30. Abutting the lower endsof said springs is a washer slidably disposed on said stem and retainedin adjustment by the nut 9. The

said nut engages and is in operative connection with the inner end oflever 10,

which lever is pivotally connected to standard 12, by pin 29, and isalso operatively connected to cam rod 11, by the pin 28.

Within the crank case 1, is disposed the main shaft 18, to which aresecured the two crank disks 19, spaced a distance apart and connected bythe wrist pin 20. wrist pin is disposed the connecting rod 21, which atits upper end is secured in op- On said The spark plugs 7 being disposedat pposite the spark plugs.

erative relation to the piston head 22, by the 7 pin 32. On the saidshaft 18 within the cam case 17, is a second spiral gear 16,

meshing with the said gear 15, in proper ratio to operate the said camrods 11 and 14, and move the valves as a double set simultaneously, torun the engine as a four cycle machine.

Having thus fully described our invention what we claim as new and ourown and desire to protect by the grant of Letters Patent is- In aninternal combustion, engine comprising a crank case, a main shaft, twocrank disks, a crank pin connecting the disks, a

connecting rod connecting the crank pin to a wrist pm, a wrist pinwithin a piston, a piston within a cylinder, a cylinder, a

valve chest adapted to cover the top of thecylinder, said valve chestdivided to form two parallel chambers, two intake valves openingsthrough the intermediate wall of said chest, two exhaust valves in thelower wall of said chest, two spark plugs at the ends of the lowerchamber of said chest, a

cam case on the side of the crank case, a cam shaft gournaled withinsaid cam case,

four cams mounted on said shaft, aspiral gear mounted on said shaft, asecond'spiral gear mounted on the main shaft and meshing with the firstgear, four cam rods, four.

rollers, one in the lower end of each of the said cam rods andcooperating with the cams aforesaid, four levers operatively connectingthe four cam rods to the four valves as described and set forth.

In testimony whereof we aflix our signatures' in the presence ofsubscribing witnesses.

GEORGE DOLEMBO. GEORGE H. LAMBERT. Witnesses:

MILO C. HAGAN, W. W. F BENCH, JOHN DUFF,

LESLIE J. PRmN.

